Nut-lock



(No Model.) G. W. TEGG.

NUT LOCK. No. 293,113. Patented Feb. 5; 1884.

Fig. 2.

%ined0'% 3. f/lv nzor H65 Horny.

MM A

UNITED STATES PATENT OFFICE.

GEORGE IVILLIAM TEGG, OF PEORIA, ILLINOIS.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 293,113, dated February5, 1824.

Application filed October 11,1ass. (No model) To all 1072,0722, it mayconcern.-

Be it known that I, GEORGE W. TEGG, of Peoria, in the county of Peoriaand State of Illinois, have invented an Improved Nut- Lock; and I dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the annexed drawings,inaking a part of this specification, in whichlike letters ofreference refer to like parts, and in which- Figure 1 represents a sideview; Fig. 2, a

- longitudinal section; Fig. 3, an end View.

The object of this invention is the construction of a nut-lock thatshall effect the non-turning of anut uponits bolt by adevice connectingmore orless rigidly together the nut and bolt. A groove is formedlongitudinally along a bolt as far as its threads extend, and a metalkey fitted therein whose outer face is notched to correspond withthethreads of the bolt. After a nut has been screwed ontothis bolt uponthe notched key, the free end of said key is bent away from the bolt,and the nut is thereby kept from turning off from the bolt.

In the drawings, N represents the nut; B, the bolt, and G the notchedkey. Said key 0 can be formed by fastening it in,the groove D of a blankbolt and then turning the thread upon the bolt and it at the same time;or the notches in the key can be made by stamping, cutting, or filing.Although I have shown this device applied to an ordinary nut, it isequally applicable to a thumbscrew or thumbnut. The key 0 is made ofspring metal, so that the nut can be turned back and forth over the bendin the key 0 without breaking it, the elasticity of said key beingsufficient to prevent the unscrewing of the nut except upon theapplication of some little force.

Fig. 2 shows the key 0 as bent sufficiently to prevent the nut N frombeing easily removed from its bolt 13. I In case there is great pressureand constant jarring against the nut N, I usually drive a small nail orother thin wedgeinto the groove D between the key and the 'bolt. Thismakes the nut perfectly secure from turning off until after said nail orsmall wedge has been removed.

What I claim as my invention, and for which I desire Letters Patent, isas follows, to wit:

The bolt B, having groove D longitudinally therein through its threads,in combination with a nut, N, thereon, and the spring-metal key 0,notched to correspondwith said threads and having its outerend bent awayfrom its containing-groove D, substantially as and for the purposespecified.

In testimony that I claim the foregoing in"- vention Ihave hereunto setmy hand this 5th day of October, 1883.

GEORGE WILLIAM TEGG.

Witnesses:

A.B. UPI-IAM, J onson STARR.

